if (MSVC)

if(CHECK_CXX_COMPILER_USED1)
# Using Visual Studio C++
elseif("${CMAKE_CXX_COMPILER_ID}x" STREQUAL "MSVCx")
# Using Intel C++
elseif("${CMAKE_CXX_COMPILER_ID}x" STREQUAL "Intelx")
else(CHECK_CXX_COMPILER_USED1)
    # GCC or Clang
    # At least C++11
    CHECK_CXX_COMPILER_FLAG("-std=c++17" COMPILER_SUPPORTS_CXX17)
    CHECK_CXX_COMPILER_FLAG("-std=c++1z" COMPILER_SUPPORTS_CXX1Z)
    CHECK_CXX_COMPILER_FLAG("-std=c++14" COMPILER_SUPPORTS_CXX14)
    CHECK_CXX_COMPILER_FLAG("-std=c++1y" COMPILER_SUPPORTS_CXX1Y)
    CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
    if(COMPILER_SUPPORTS_CXX17)
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
    elseif(COMPILER_SUPPORTS_CXX1Z)
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++1z")
    elseif(COMPILER_SUPPORTS_CXX14)
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
    elseif(COMPILER_SUPPORTS_CXX1Y)
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++1y")
    elseif(COMPILER_SUPPORTS_CXX11)
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
    else(COMPILER_SUPPORTS_CXX17)
        message(STATUS "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. Please use a different C++ compiler.")
    endif(COMPILER_SUPPORTS_CXX17)

    if(CHECK_CXX_COMPILER_USED2)
    elseif("${CMAKE_CXX_COMPILER_ID}x" MATCHES "Clangx")
        # Using Clang
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Weverything -Wno-c++98-compat -Wno-c++98-compat-pedantic -Wno-global-constructors")
    elseif("${CMAKE_CXX_COMPILER_ID}x" STREQUAL "GNUx")
        # Using GCC
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -pedantic")
    endif(CHECK_CXX_COMPILER_USED2)
endif(CHECK_CXX_COMPILER_USED1)

else (MSVC)
    #set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
    set(CMAKE_CXX_STANDARD 20)
    #set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
endif(MSVC)
